A swiss plug will go into a German or french socket, a German plug will go into a french socket and visa-versa. A two pin German plug will fit in a swiss socket. There are probably more compatibilities with the EU, but these are off the top of my head.
Also, traveling to a different country within the EU isn't the same as going to a different state in the US, so technically, we are better off in the EU plug wise.
So if they want to be active in your country they need to pay an 'activation tax' or something, that counteracts removing the majority of their profits tax-free from the country.